20458928

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4937}}^1$

素因数の和:4989

約数の個数: 40

約数和(自身を含む): 46535712

約数和(自身を除く): 26076784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 4937, 9874, 19748, 34559, 39496, 69118, 78992, 138236, 182669, 276472, 365338, 552944, 730676, 1278683, 1461352, 2557366, 2922704, 5114732, 10229464, 20458928]

約数ペア:

[(1, 20458928), (2, 10229464), (4, 5114732), (7, 2922704), (8, 2557366), (14, 1461352), (16, 1278683), (28, 730676), (37, 552944), (56, 365338), (74, 276472), (112, 182669), (148, 138236), (259, 78992), (296, 69118), (518, 39496), (592, 34559), (1036, 19748), (2072, 9874), (4144, 4937)]